Speaker
Mr
Vasilis Rakopoulos
(Uppsala University)
Description
Fission yield data is a key parameter in the design and operation of nuclear power plants. Fission yield distributions depend not only on the fissioning nuclei, but also on the energy and type of the incoming particles inducing fision.
More accurate data could improve both safety and fuel economy of present generation reactors as well as that of future nuclear systems. Improved knowledge of isomeric fission yields are also important for simulations of the astrophysical r-process.
The Accurate Fission data FOr Nuclear Safety (AlFONS) project aims at high precision measurements of fission yields, using the renewed Ion Guide Isotope Separator Online (IGISOL) facility in combination with a new high-current light-ion cyclotron at the University of Jyväskylä. Fission can be induced in an actinide target either directly by the 30 MeV proton beam or by a neutron field from a Beryllium converter target. Through a series of elements, culminating with the JYFLTRAP Penning trap, the fission fragments can be mass separated at a resolving power of a few hundred thousand. The mass resolution is enough to resolve single isotopes as well as some isomeric states.
We will here present the experimental setup and the IGISOL technique as well as some preliminary results from measurements performed in 2013 and 2014 of isomeric yield ratios of proton induced fission of Uranium and Thorium.
Primary author
Mr
Vasilis Rakopoulos
(Uppsala University)
Co-authors
Dr
Ali Al-Adili
(Uppsala University)
Mr
Andrea Mattera
(Uppsala University)
Dr
Andreas Solders
(Uppsala University)
Prof.
Ari Jokinen
(University of Jyväskylä)
Mr
Dmitry Gorelov
(University of Jyväskylä)
Dr
Heikki Penttilä
(University of Jyväskylä)
Dr
Mattias Lantz
(Uppsala University)
Dr
Sami Rinta-Antila
(University of Jyväskylä)
Prof.
Stephan Pomp
(Uppsala University)
Tommi Eronen
(University of Jyväskylä)
Dr
Veli Kolhinen
(University of Jyväskylä)
